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2 years ago

Increase 60kg by 40% please help!

Mathematics

2 answers:

klio [65]2 years ago

8 0

Answer:

84 kg

Step-by-step explanation:

dsp732 years ago

5 0

Answer: 24. Is that one of your options?

Step-by-step explanation:

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Find the roots.<br><br> 2x^2 + 4x - 5 =0

xz_007 [3.2K]

Answer:

$-1\pm\dfrac{\sqrt{14}}{2}$

Step-by-step explanation:

$2x^2+4x-5=0$

Using the quadratic formula:

$x=\dfrac{-4\pm \sqrt{16+40}}{4}=-1\pm\dfrac{\sqrt{14}}{2}$

Hope this helps!

8 0

2 years ago

Mr. Rr the Rreliable Rrobot has been programmed to whistle every $18$ seconds and do a jumping jack every $42$ seconds, starting

sveta [45]

Answer:

7 times during the first 15 minutes

Step-by-step explanation:

Remember that

$1\ min=60\ sec$

$15\ min=15(60)=900\ sec$

Decompose the numbers 18 and 42 in prime factors

we know that

$18=(2)(3^2)$

$42=(2)(3)(7)$

Find the least common multiple (LCM)

The LCM is

$(2)(3^2)(7)=126\ sec$

we need to find all multiples of 126 that are less than or equal 900.

$126*1=126\ sec\\126*2=252\ sec\\126*3=378\ sec\\126*4=504\ sec\\126*5=630\ sec\\126*6=756\ sec\\126*7=882\ sec$

therefore

7 times during the first 15 minutes

7 0

2 years ago

Simplest form of 4500:80000 and 8100:144000

a_sh-v [17]

9514 1404 393

Answer:

9/160
9/160

Step-by-step explanation:

Divide each number in the ratio by their greatest common divisor.

4500 : 80000 = (4500/500) : (80000/500) = 9 : 160

8100 : 144000 = (8100/900) : (144000/900) = 9 : 160

3 0

2 years ago

Who can help me with this number 5 I need help with

Ann [662]

Answer:

A.Y

B.X

C.They become opposite

Step-by-step explanation: A. When you reflect the x - axis you don't change the y - axis B: Same as A C: You multiply them both by -1 basicly

6 0

2 years ago

I need help, can anyone please help me?? I'll mark you BRAINLIEST if you answer correctly. :). Fill in the blanks.

pav-90 [236]

(x+4)²=-63

....brainliest would be appreciated

5 0

2 years ago